| A | B |
|---|
| abduction | moving away from your midline |
| adduction | moving towards your midline |
| eversion | moving away and outward at an angle |
| inversion | moving toward and inward at an angle |
| circumduction | abduction, rotation and adduction |
| flexion | shortening a muscle |
| extension | lengthening a muscle |
| pronation | turning on its front (stomach) |
| supination | turning on its back |
| actin | protein that controls muscle contraction |
| myosin | protein that controls muscle contraction |
| volunatary | skeletal muscles |
| single nuclei | smooth muscle |
| branching fibers | cardiac muscle |
| origin | point where muscle connects to immovable bone |
| insertion | point where muscle connects to movable bone |
| rotation | move in a circle around a joint |
| striated | striped (light and dark bands) |
| fascia | envelopes of fibrous tissue surrounding muscles |
| visceral | smooth muscle |
